Question
A work can be completed by ‘A’ and ‘B’, alone in
15 days and 20 days, respectively. Find the number of days taken by ‘C’ to complete the same work alone if ‘A’, ‘B’ and ‘C’ together can complete the whole work in 4 days.Solution
Let total work = 60 units (LCM of 15 and 20) Efficiency of ‘A’ = (60/15) = 4 units/day Efficiency of ‘B’ = (60/20) = 3 units/day Combined efficiency of ‘A’, ‘B’ and ‘C’ = (60/4) = 15 units/day Efficiency of ‘C’ = 15 – (4 + 3) = 8 units/day Required time taken = (60/8) = 7.5 days
Jharkhand is one such state to which people have remained to return after several big cities composed curbs, night curfews, and lockdowns to tickle the ...
The committees take the heat up the issues and deal with them in a mature manner by listening to all stakeholders.
In the following question, a sentence is given with a phrase or idiom highlighted in bold. Select the option given below that can replace the highlight...
In the following questions, sentences are given with a part in bold. The given phrase in bold may or may not contain an error. If a phrase has an error...
Almost the COVID-19 pandemic precipitated a crisis of trade imbalance, the fundamentals of the Sri Lankan economy have always had serious issues.
...A city and its spaces are constantly evolving and changing to adapting for its residents and users.
...The government continues to be in communication with the rest of the world so that (A)/ beneficiaries of the world’s largest COVID-19 vaccination pro...
Select the most appropriate option to substitute the Bold segment in the given sentence. If there is no need to substitute it, select ‘No substitution...
Improve the bold part of the sentence. Choose “No improvement” if correct.
He is one of the players who has performed consistently well t...
Below is given a sentence with an emboldened part. The part may or may not be grammatically correct. The question is followed by three alterna...
Relevant for Exams:
